Online monitoring of bromate in treated wastewater: implications for potable water reuse

Fujioka, Takahiro; Boivin, Sandrine; Takeuchi, Haruka

doi:10.1039/d1ew00634g

Cited by 2 publications

(3 citation statements)

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“…There has been limited success for online bromate measurements. One approach, which utilizes fluorescence detection of trifluoperazine (TFP), has been examined and showed promise; however, further long-term experience is needed with such systems. , …”

Section: Bromate Measurementmentioning

confidence: 99%

“…One approach, which utilizes fluorescence detection of trifluoperazine (TFP), has been examined and showed promise; however, further long-term experience is needed with such systems. 45,46 For sample collection, oxidant quenching should be carried out to avoid continuing bromate formation during storage. Quenching agents, such as indigo trisulfonate, thiosulfate, sulfite, buten-3-ol, or cinnamic acid, can be applied.…”

Section: ■ Introductionmentioning

confidence: 99%

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Critical Review on Bromate Formation during Ozonation and Control Options for Its Minimization

Morrison

Hogard

Pearce

et al. 2023

Environ. Sci. Technol.

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Ozone is a commonly applied disinfectant and oxidant in drinking water and has more recently been implemented for enhanced municipal wastewater treatment for potable reuse and ecosystem protection. One drawback is the potential formation of bromate, a possible human carcinogen with a strict drinking water standard of 10 μg/L. The formation of bromate from bromide during ozonation is complex and involves reactions with both ozone and secondary oxidants formed from ozone decomposition, i.e., hydroxyl radical. The underlying mechanism has been elucidated over the past several decades, and the extent of many parallel reactions occurring with either ozone or hydroxyl radicals depends strongly on the concentration, type of dissolved organic matter (DOM), and carbonate. On the basis of mechanistic considerations, several approaches minimizing bromate formation during ozonation can be applied. Removal of bromate after ozonation is less feasible. We recommend that bromate control strategies be prioritized in the following order: (1) control bromide discharge at the source and ensure optimal ozone mass-transfer design to minimize bromate formation, (2) minimize bromate formation during ozonation by chemical control strategies, such as ammonium with or without chlorine addition or hydrogen peroxide addition, which interfere with specific bromate formation steps and/or mask bromide, (3) implement a pretreatment strategy to reduce bromide and/or DOM prior to ozonation, and (4) assess the suitability of ozonation altogether or utilize a downstream treatment process that may already be in place, such as reverse osmosis, for post-ozone bromate abatement. A one-size-fits-all approach to bromate control does not exist, and treatment objectives, such as disinfection and micropollutant abatement, must also be considered.

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Section: Bromate Measurementmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Critical Review on Bromate Formation during Ozonation and Control Options for Its Minimization

Morrison

Hogard

Pearce

et al. 2023

Environ. Sci. Technol.

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“…) is a common by-product of ozone oxidation or chlorination of bromine (Br − ) in water. [1][2][3] Br − is ubiquitous, and its concentration range varies in different water bodies. Our group detected Br − concentrations of ∼170-200 mg L −1 in the East Tai Lake.…”

mentioning

confidence: 99%

Enhanced photocatalytic removal of bromate in drinking water by Au/TiO₂ under ultraviolet light

Xu,

Yu,

Huang

et al. 2024

RSC Adv.

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Online monitoring of bromate in treated wastewater: implications for potable water reuse

Abstract: Continuous monitoring of bromate ions, a disinfection by-product of the ozonation of wastewater, may improve the safety of recycled water for potable use. A recently developed elemental analyzer can determine...

Cited by 2 publications

References 22 publications

Critical Review on Bromate Formation during Ozonation and Control Options for Its Minimization

Critical Review on Bromate Formation during Ozonation and Control Options for Its Minimization

Enhanced photocatalytic removal of bromate in drinking water by Au/TiO₂ under ultraviolet light

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Online monitoring of bromate in treated wastewater: implications for potable water reuse

Abstract: Continuous monitoring of bromate ions, a disinfection by-product of the ozonation of wastewater, may improve the safety of recycled water for potable use. A recently developed elemental analyzer can determine...

Cited by 2 publications

References 22 publications

Critical Review on Bromate Formation during Ozonation and Control Options for Its Minimization

Critical Review on Bromate Formation during Ozonation and Control Options for Its Minimization

Enhanced photocatalytic removal of bromate in drinking water by Au/TiO2 under ultraviolet light

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Product

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Enhanced photocatalytic removal of bromate in drinking water by Au/TiO₂ under ultraviolet light